Description
ARCTIC P12 Slim PWM PST 120mm Case Fan
ACFAN00187A
The ARCTIC P12 Slim PWM PST (ACFAN00187A) is a premium 120 mm case fan engineered for efficient airflow in systems where traditional fan thickness isn’t suitable — such as small form factor PC builds, cooled radiator mounts with tight space, or airflow-restricted cases with dust filters.
Its slim 15 mm profile reduces installation space requirements while retaining strong airflow performance and static pressure capacity. The fan operates across a wide 300 – 2400 RPM PWM range, allowing it to adapt dynamically to cooling needs — from silent idle operation to aggressive cooling when the system demands it.
PWM Sharing Technology (PST) lets multiple PST fans link together and be controlled from a single motherboard PWM header, simplifying cable management while maintaining synchronized control of fan speeds. The fluid dynamic bearing ensures durability and low noise throughout long service life.
This fan is a great choice for cases needing strong airflow in tight confines, additional intake/exhaust support, or cooling across radiators where space is limited.
Why It’s a Great Choice
Slim Profile for Tight Spaces:
Its 15 mm thickness makes the fan ideal for compact PC builds, tight radiator mounts, SFF cases, or airflow restricted environments where standard fans won’t fit.
Wide PWM Speed Range:
With a 300 – 2400 RPM control range, the fan can operate quietly at low system loads or ramp up for serious airflow when needed — giving both performance and acoustics.
High Static Pressure:
The design pushes air efficiently through restrictive dust filters, heatsinks, and tight case vents — making it useful for radiator cooling and airflow-challenged layouts.
PWM Sharing Technology (PST):
PST allows you to daisy-chain multiple fans off a single PWM header for synchronized speed control and cleaner cable management.
Durable & Quiet:
The fluid dynamic bearing keeps operational noise low while increasing lifespan — great for systems that run 24/7.
Versatile Use Cases:
Perfect for small form factor (SFF) systems, HTPCs, radiator intake/exhaust support, additional case airflow layers, or any build needing optimized fan placement.
Long Warranty:
Backed by ARCTIC’s 6-year warranty, you get confidence in reliability and long-term performance.
Specifications:
| Specification | Details |
|---|---|
| Brand | ARCTIC |
| Model / SKU | P12 Slim PWM PST (ACFAN00187A) |
| Fan Size | 120 × 120 × 15 mm |
| Fan Type | PWM controlled chassis fan |
| Speed Range | 300 – 2400 RPM (PWM) |
| Airflow | 46.8 CFM / 79.6 m³/h |
| Static Pressure | 2.19 mm H₂O |
| Bearing | Fluid Dynamic Bearing |
| Connector | 4-Pin PWM + 4-Pin PST |
| Cable Length | ~400 mm + PST extension |
| Operating Temp. | 0 – 40 °C |
| Weight | ~95 g |
| Colour | Black |
| Warranty | 6 Years |
| Use Case | Compact builds, radiators, SFF cases, airflow optimization |




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